Research Information System
International Conference on Smart Innovation in Science and Engineering, Salalah, Oman, 7 - 08 April 2021, pp.30-31
This review describes the evolution
of additively manufactured metal parts used in aircraft parts. Additive
manufacturing (AM) or 3-D printing enables to manufacture of complex geometries
that conventional manufacturing techniques cannot produce. These metal parts have
been widely used in aircraft, aerospace, biomedical, and defense industries. It
is commonly known that weight and cost reduction are among the most requested
design expectations in the aviation industry. Parts used in aircraft are generally
produced by machining of expensive engineering materials. AM permits an
alternative to machining in the aviation industry, which is vital for reducing
the economic and environmental aspects. Also, the microstructure of the AM
metal parts can be controlled during manufacturing. Within the study, the metal
AM process is classified into two categories: Laser powder bed fusion and
directed energy deposition. Examples of AM metallic materials, including steel,
titanium, aluminum, platinum, nickel, and their alloys, are represented. Further,
the pros and cons of the AM over conventional manufacturing techniques
(Machining, forming, welding, etc.) are discussed. Then, benefits of the
topology optimization and design for AM methods along with the industrial
applications are given. The utilization of AM as a repair technique is also
demonstrated. Lastly, recent advances in the standardization of industrial AM
processes are presented.